Water-cooling system fob internal-combustion engines



A. M. PAREIRA.

WATER COOLING SYSTEM FOR lNTERNAL COMBUSTION ENGINES.

APPLICATION FILED APRJZ, 1920.

1,373,445, Patented Apr. 5, 1921.

If: m ,zz

r r I? I): I I z@ t F o 5 1 L k 8 Q6 x 7 J [L /)Q' I H w 1/? L1 M97250): flarofl K1 0716270,

sources of trouble and UNITED STATES v AARON M. PAREIRA, OF MARINETTE, WISCONSIN.

WATEB-COQLING SYSTEM FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Apr. 5, 1921.

Application filed April 12, 1920. Serial No. 373,283. 7

To all wh0m it may concern:

1 3e 1t knownthatI, AARON M. PAREIRA, a citizen of the United States, residing at Marinette, county of Marinette, State of Wisconsin, have invented a certain new and useful Improvement in Water-Cooling Systems for Internal-Combustion Engines, of which the'following is a specification, referencebeing had to the accompanying drawing, forming a part thereof.

This invention relates generally to automobiles and more particularly to acertain new and useful improvement in water-cooling systems for the internal combustion en gines of automobiles and the like.

It'is a well known fact that engine-freezing in cold weather is one of the great bilists; It is thecommon practice today to use alcohol and so-called non-freezing com pounds in the automobile-radiator,as well as engine-hood covers, to prevent enginefreezing; such means,-however, have, so far as I amaware, been found most inadequate in positively preventing engine-freezing. It is the chief object .of my present invention to provide, in connection with the water cooling system of the engine, an apparatus which will substantially entirely do away with, and consequently obviate the expense and inconvenience resulting from, enginefreezing.

scribed; and

With the above and other objects in view,

mypresent invention resides in the novel features of form, constructlon, arrangement,

and combination of parts hereinafter declaims. a I

' In the accompanying drawing' iFigures land 2 show in diagram an auto mobile internal combustion engine and its water-cooling system equipped with an apparatus embodying my invention; and

Figs. 3 and 4 show in enlarged section the several positions of the preferred form of valve employed in, and forming part of,

the apparatus for directing the flow of water or other fluidto and from the water-jacket of the engine. I r

'Referring now more in' detail to the said drawing, in which like reference characters refer to like parts throughout the several views, I have shown-my new apparatus 1n connectionwith an automobile internal combustionengineof standard construction, of

which 1 indicates therwater-jacket of the expense to automo- 7 afterward pointed out in the engine, 2 the water-ra diator constituting the normal water-supply tank for the jacket 1, 3 the outlet or discharge pipe from the radiatoror tank 2 to the jacket 1, and 4 the return-plpe from the jacket 1 to the radiator or tank2. Having communicating conn ectionwith the pipe 3, as shown, is the circulating pump 5 driven, as is common,

by means such as the pulley 6, which is belt or otherwise suitably connected with the.

engine-shaft, .not shown.

PATENT OFFICE.

7 indicates what I may designate as a four-way valve for directing or controlling thefiowof water to and from the jacket 1. Th1S VLlV8 7 is located preferably as seen in Figs. 1 and 2 and is adapted for communication through a pipe-connection 8 with the j acketl, through a pipe-connection .9 with the outlet side of the pump 5, througha pipeconnection 10 with a pipe 11 leading to, and communicatingwith, a storthe instrument-board of the automobile for.

convenlent manipulation by the automobiledriver.

- The storage-tank 12 is suitably mounted upon the automobile, preferably under the cowl, as shown, at about the top level of the radiatoror tank 2 to prevent overflowing.

This storage receptacle or tank 12 is preferably substantially similar in construction to what are commonly known as. thermos tanks, being surrounded by and inclosed within an insulating shell or covering '18, so that the water therein will be subjected to a minimum of heat radiation or efiusion and thereby maintained for a more or less extended period of time at its entering tem perature,

Leading from the tank- 12 and communicatingwith the pipe'3, is a return pipe 19, interposed in which are valvesl20 and 21, the former for controlling the flow of water from the tank 12 back to the tank 2 or to i the pump 5 forming'partof the normal cooling system of the engine, and the latter being adapted as a drain for the complete system, including, if desired, the tank 12. a

In use or operation, we will first assume that the radiator or normal supplytank 2 has been suitably filled with water and valve 7 to be in normal position or in the position 1 thereof illustrated inv Fig. 3, the pump 5 being merely V in communication through valve 7 with the acket 1. Valves 20 and 21 are, of course, in closed position. The cooling system of the engine will now operate as is usual, the water fromtank 2 being pumped through pipe 3 and pump 5 into the jacket 1 and returning through pipe 4: to the radiator for cooling. However, should the automobile bestopped in cold, freezing weather, and it be desired to obviate engine-freezing, valve is manipulated by means of its operating rod 17 to the position thereof illustrated in Fig. A, communication being thereby established through the valve 7 and its said pipe-com nections between the outlet-side of the pump 5 and the tank 12 and between the jacket 1 and the suction or inlet-side of the pump, communication being broken, as will the noted, between the jacket 1 and the discharge or outlet-side oi". the pump 5. The engine continuing to temporarily run, the pump 5 will now operate to pump the water from normal supply tank or radiator 2'into the tank 12; at the same time, water in the jacket 1 will be drawn back to the suction or inlet side of the pump 5 and then also pumped into the tank 12, the cooling system of the engine being thus substantially entirely drained into the storage-tank .12, where, as before mentioned, the water will be maintained at its entering temperature for a considerable period of time, and this water being more or less hot, due to the run ning of the engine. freezing is thus, not only in the system, but also in the tank12, positively obviated.

On again startlngthe automobile, valve 7 isreversely actuated to normal position or tothe position thereof illustrated in Fig. 8, breaking communication between the jacket 1 and the suction side of the pump 5 and opening or establishing the normal communication between the jacket 1 and the outlet or discharge side of the pump 5, and

also breaking communication between the tank 12 and the outlet or discharge side of the'pump. Valve 20 being now opened,

'water from tank 12 flows into the normal supply tank 2, and the engine'then operating, the cooling system of the engine will function normally, valve 20 being again and in due course actuated to closed position to interrupt the flow of water from tank 12 to the normal system.

Thus, by comparatively simple means, I eliminate substantially any danger of engine freezing. The apparatus is positive'in its operations, may be readily and inexpens ively installed in connection with the engine and its cooling system, may be conveniently and easily operated substantially at will, and but little time is consumed in either draining thesystem into the tank 12 or in again supplying the system from the tank '12. It will be evident that tank 12 may be also employed an auxiliary supply tank for the system, providing a convenient storage receptacle for an extra supply of water for the system, and that valve 21 provides 12 and the normal cooling system of the engine.

1 am aware that changes in the form, construction, arrangement, and combination of the several parts of my new* apparatus may be made and substituted 1? r those herein shown and described without departing from the nature and principle of my invention. V

Having thus described my, invention, what I claim and desire to secure by Letters Patent is? i 1. An internal combustion engine and its water-j acket, in combination with a watersupply tank for the jacket, a water-storage tank, and communicating connections ineluding a pump between the jacket and tanks, the pump being operable for supplying the jacket from the supply-tank and for draining boththe supply-tank and jacket into the storage-tank.

water-jacket, in combination witha watersupply tank for the jacket, a water-storage tank, communicating connections including a pump between the jacket and tanks, and a valve interposed in said connections for directing the flow of fluid therethrough, the pump being operablefor supplying the jacket "from the supply tank and for draining both the supply-tank and jacket into the storage-tank. I

3. An internal combustion engine'and its water-jacket, in combination'with a watersupply tank for the jacket, a water-storage tank, communicating connections including a pump between the jacket and tanks, a valve interposed insaid connections for directing:

the flow ofyfluid thierethrough, and means for actuating the valve at will, the pump being operable for supplying the jacket from the supply-tank and for draining both thejacket and'the supply-tank into the storage-tank.

4. An internal combustion engine and its water-jacket, in combination with a watersupply tank for the jacket, a water-storage tank, communicating connections including a pump between the jacket and tanks, a

valve interposed in said connections for di-' recting the flow of fluid therethrough, means for actuating the valve at will, the pump being operable for supplying the jacket from the supply-tank and for draining both the jacket and supply-tank into the storagetank, and additional communicating connections between the storagetank and the supply-tank for re-supplying the supply-tank from the storage-tank.

5. An internal combustion engine and its waterjacket, in combination with a watersupply tank for the acket, a pump, a valve, and communicating connections between the tank, acket, pump, and valve, the valve being adapted to normally establish communication between the jacket and the discharge side of the pump and to abnormally establish communication between the acket and the suction side of the pump, the pump being operable both to supply the jacket from the supply-tank and to drain the jacket of its Water.

6. An internal combustion engine and its water-jacket, in combination with a watersupply tank for the jacket, a pump, a valve, and communicating connections between the tank, jacket, pump and valve, the valve being adapted to normally establish communication between the jacket and the discharge side of the pump and to abnormally establish communication between the pump and drain and between the jacket and the suction side of the pump, the pump being operable both to supply the jacket from the supply-tank and to drain both the jacket and the supply tank of their water.

In testimony whereof, I have signed my name to this specification.

AARON M. PAREIRA. 

